4: Common probability distributions

Question 1

Days of rainfall

Answer 1

discrete (there are countable whole numbers- 30 days in a month)

Question 2

amount of rainfall in a month

Answer 2

continuous (there are infinite numbers of possible fractional outcomes)

Question 3

The probability of a specific outcome in a continuous distribution=

Answer 3

0; there are infinite numbers of possible fractional outcomes

Question 4

specifies the probabilities for a group of related random variables:

Answer 4

Multivariate distribution

Only meaningful when the behavior of each variable is dependent on the behavior of others;
Correlation is the feature that distinguishes a multivaraite distribution from a univariate distribution

Question 5

Indicates the strength of a linear relationship between a pair of random variables:

Answer 5

Correlation